Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
nganh nang » nganh nong, ganh nang, ngan hang
hoc nganh » hoc nhanh
phan nhan » chan nhan, pham nhan, phan nha
cuu cong » cua cong, thu cong, cac cong
cong hoc » dong hoc, cong hoa, cong coc
nang hoc » nang doc, nang luc, dong hoc
hoa phan » hoa dan, co phan
nhan dan » phan dau, gian dan, nhan tai
hoc tai » hoc dai, hoc bai, hoc giai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ((hoc tai) OR (hoc tap)), nghien cuu cong hoc nganh nang hoc ma hoa phan nhan dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ((hoc tai) OR (hoc tap)), nghien cuu cong hoc nganh nang hoc ma hoa phan nhan dan".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ((hoc tai) OR (hoc tap)), nghien cuu cong hoc nganh nang hoc ma hoa phan nhan dan*.